Re: [eclipse-clp-users] Why the minimize is halting in each solution?

Hi,

In your model your should not have any predicates like `member`, only
constraints. Basically, your model should not leave any Prolog choice
points.

And your program can be much much simpler and shorter. My attempt:

:- lib(ic).
:- lib(branch_and_bound).

model(SizeWindow, Vs, Xs, Total) :-
    length(Vs, N),
    dim(Xs, [N]),
    Xs :: 0..1,
    [Begin, End] :: 1..N,
    End - Begin #= SizeWindow,
    ( foreacharg(Xi, Xs, I), param(Begin, End) do
        Yes #= (I #>= Begin and I #=< End),
        #=(Xi, 1, Yes) ),
    array_list(Xs, Xslist),
    Total #= Vs * Xslist.

find(Xs, Total) :-
    Cost #= -Total,
    minimize(search(Xs, 0, first_fail, indomain, complete, []), Cost).

go :-
    Vs = [60, 60, 60, 25, 30, 47, 65, 55, 71, 95],
    model(5, Vs, Xs, Total),
    find(Xs, Total),
    writeln([Xs, Total]).


Sergii,


On Fri, Jun 21, 2013 at 11:50 AM, Claudio Cesar de Sá
<claudio.sa_at_udesc.br>wrote:

> Hi
>
> The program attached select a contiguous set of the values in an array.
> This contiguous values
> in array is like a window or frame over this array. I am doing this find
> the maximal of this subset in
> a array.
>
> The program is woking fine .... but it is halting for one solution per
> time.
> The minimize predicate should be exploring all the possibilities ...
> trying to minimize a cost function.
> Why the branch-bound is not working?
>
> To run it, press go.
>
> Thanks in advance and excuse for the code comments in Portugese
>
>
>
> --
>
> Obrigado
>
> claudio
>     (
>     ))
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